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Thrust and Pressure Detailed Explanation (Old Syllabus) Video Lecture | Crash Course: Class 9

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FAQs on Thrust and Pressure Detailed Explanation (Old Syllabus) Video Lecture - Crash Course: Class 9

1. What is thrust and pressure?
Ans. Thrust is the force that acts on an object perpendicular to the surface it is in contact with. Pressure, on the other hand, is the force applied per unit area. Both thrust and pressure are related to the distribution of force over an area.
2. How are thrust and pressure related?
Ans. Thrust and pressure are related as pressure is the force per unit area. Thrust can be calculated by multiplying pressure with the area over which it acts. Mathematically, thrust = pressure × area.
3. Can you give an example of thrust and pressure in everyday life?
Ans. Yes, for example, when we sit on a chair, the weight of our body is distributed over a small area of the chair's surface. This creates pressure on the chair. The chair exerts an equal and opposite force (thrust) on our body to balance this pressure.
4. How can the thrust and pressure be increased?
Ans. The thrust and pressure can be increased by either increasing the force applied or by reducing the area over which the force is distributed. For example, if we apply more force while pushing a box, the thrust and pressure will increase. Similarly, if we stand on our toes, the area of contact with the ground reduces, resulting in higher pressure.
5. What are the units of thrust and pressure?
Ans. The SI unit of thrust is newton (N), and the SI unit of pressure is pascal (Pa). It is important to note that 1 pascal is equal to 1 newton per square meter (N/m^2).
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